Evidence map›Paper›PMID 33475980›Full record

ArticleReproductive sciences (Thousand Oaks, Calif.)2021

Impact of Mitochondrial Genetic Variants in ND1, ND2, ND5, and ND6 Genes on Sperm Motility and Intracytoplasmic Sperm Injection (ICSI) Outcomes.

Mohammad A Al Smadi, Mohamad Eid Hammadeh, Erich Solomayer, Osamah Batiha, Mohammad M Altalib, Mohammad Y Jahmani, Mohammad A Shboul, Bassam Nusair, Houda Amor

Open access · hybridAbstract read
In one paragraph

Article in Reproductive sciences (Thousand Oaks, Calif.), 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
16citing papers in PubMed, 2 pooled it
2.5field-weighted citation impact, top 11% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

16 citing papers in PubMed, 2 syntheses or guidelines pooled it, 26 citations in OpenAlex.

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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

9 authors at 4 institutions in 2 countries.

Mohammad A Al SmadiDepartment of Obstetrics & Gynecology, Reproductive Medicine Unit, Saarland University, Homburg, Germany. m_alsmadi@yahoo.com.ORCID http://orcid.org/0000-0002-8262-6247
Mohamad Eid HammadehDepartment of Obstetrics & Gynecology, Reproductive Medicine Unit, Saarland University, Homburg, Germany.
Erich SolomayerDepartment of Obstetrics & Gynecology, Reproductive Medicine Unit, Saarland University, Homburg, Germany.
Osamah BatihaDepartment of Biotechnology & Genetic Engineering, Jordan University of Science and Technology, Irbid, Jordan.
Mohammad M AltalibDepartment of Statistics, Yarmouk University, Irbid, Jordan.
Mohammad Y JahmaniDepartment of Obstetrics & Gynecology, Reproductive Medicine Unit, Saarland University, Homburg, Germany.
Mohammad A ShboulDepartment of Medical Laboratory Sciences, Jordan University of Science and Technology, Irbid, Jordan.
Bassam NusairReproductive Endocrinology and IVF Unit, King Hussein Medical Centre, Amman, Jordan.
Houda AmorDepartment of Obstetrics & Gynecology, Reproductive Medicine Unit, Saarland University, Homburg, Germany.
Saarland University · DEJordan University of Science and Technology · JOKing Hussein Medical Center · JOYarmouk University · JO

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Sperm mitochondrial dysfunction causes the generation of an insufficient amount of energy needed for sperm motility. This will affect sperm fertilization capacity, and thus, most asthenozoospermic men usually require assisted reproductive techniques. The etiology of asthenozoospermia remains largely unknown. The current study aimed to investigate the effect of mitochondrial genetic variants on sperm motility and intracytoplasmic sperm injection (ICSI) outcomes. A total of 150 couples from the ICSI cycle were enrolled in this study. One hundred five of the male partners were asthenozoospermic patients, and they were subdivided into three groups according to their percentage of sperm motility, while forty-five of the male partners were normozoospermic. Genetic variants were screened using direct Sanger's sequencing in four mitochondrial genes (nicotinamide adenine dinucleotide hydrogen (NADH) dehydrogenase 1 (ND1), NADH dehydrogenase 2 (ND2), NADH dehydrogenase 5 (ND5), and NADH dehydrogenase 6 (ND6)). We identified three significant variants: 13708G>A (rs28359178) in ND5, 4216T>C (rs1599988) in ND1, and a novel 12506T>A in ND5 with P values 0.006, 0.036, and 0.013, respectively. The medians of sperm motility, fertilization rate, embryo cleavage score, and embryo quality score were significantly different between men showing 4216T>C, 12506T>A, 13708G>A and wild type, Mann-Whitney P values for the differences in the medians were < 0.05 in all of them. The results from this study suggest that 13708G>A, 12506T>A, and 4216 T>C variants in sperm mitochondrial DNA negatively affect sperm motility and ICSI outcomes.

Indexed as

Sperm Injections, IntracytoplasmicDNA, MitochondrialElectron Transport Complex IHumansMaleMitochondrial ProteinsNADH DehydrogenaseSperm MotilityDNA, MitochondrialElectron Transport Complex IMitochondrial ProteinsMT-ND5 protein, humanMT-ND6 protein, humanNADH DehydrogenaseNADH dehydrogenase subunit 1, humanNADH dehydrogenase subunit 2, humanAsthenozoospermiaEmbryo cleavage scoreEmbryo quality scoreFertilization ratemtDNASperm motility

Identifiers

PMID33475980
PMCPMC8076152
OpenAlexW3125214054

What Socratic holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the Socratic graph.